WM9082 datasheet(5/24 Pages) WOLFSON

номер детали	WM9082

подробное описание детали	PDM Input Mono 3W Class D Speaker Driver

PDF	24 Pages

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производитель	WOLFSON [Wolfson Microelectronics plc]

домашняя страница	http://www.wolfsonmicro.com

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Production Data

WM9082

PD, August 2012, Rev 4.1

ELECTRICAL CHARACTERISTICS

Test Conditions

SPKVDD = 3.6V, DVDD = 1.8V, SPKGND=GND = 0V, TA = +25

oC, Load = 4Ω+33µH,

1kHz signal, CLK=6.144MHz (128fs), fs=48kHz unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Speaker Driver

Signal to Noise ratio

SNR

A-weighted

Idle channel noise

A-weighted

VRMS

Total Harmonic

Distortion + Noise

THD+N

PO = 625mW

-70

Output Power

(THD+N = 1%)

RL = 4, SPKVDD = 3.6V

1.3

RL = 4, SPKVDD = 5.0V

2.5

RL = 8, SPKVDD = 3.6V

0.65

RL = 8, SPKVDD = 5.0V

1.25

Speaker Load resistance

(see note 1)



Speaker Load

capacitance

(see note 1)

Direct connection to

SPKOUTP+SPKOUTN

200

PSRR (SPKVDD)

PSRR

200mV (peak-peak) 217Hz

Idle digital audio input while in

the ON state

Power efficiency

RL = 4, PO = 625mW,

SPKVDD = 3.6V

RL = 8, PO = 625mW,

SPKVDD = 3.6V

Clocking (IN1 or IN2)

CLK input

fs = 48kHz

6.144

MHz

fs = 44.1kHz

5.6448

fs = 32kHz

4.096

Digital Input (IN1 or IN2)

Input high level

(see note 1)

0.7 x DVDD

Input low level

(see note 1)

0.3 x DVDD

Input capacitance

(see note 1)

Input leakage

-0.9

0.9

A

Other Parameters

Pop-free start-up time

‘OFF’ state to ‘ON’ state

(see Figure 3)

Shutdown time

‘ON’ state to ‘OFF’ state

(see Figure 3)

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